Submission #538712

#	Time	Username	Problem	Language	Result	Execution time	Memory
538712		kabika	Knapsack (NOI18_knapsack)	C++14	49 / 100	135 ms	262144 KiB

knapsack

#include <iostream>
#include <vector>
#include <algorithm>
#include <math.h>
using namespace std;
typedef long long ll;

int main()
{
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int s, n;
	cin >> s >> n;

	if (n == 1)
	{
		int v, w; ll k;
		cin >> v >> w >> k;
		int m = s / w;
		if (m <= k)
			cout << v * m << '\n';
		else
			cout << v * k << '\n';
		return 0;
	}

	vector<int> v, w;

	for (int i = 0; i < n; ++i)
	{
		int val, wt; 
		ll k;
		cin >> val >> wt >> k;
		v.insert(v.end(), k, val);
		w.insert(w.end(), k, wt);
	}
	ll sz = v.size();

	vector<vector<int>> dp(sz + 1, vector<int>(s + 1, 0));
	for (int i = 1; i <= sz; ++i)
	{
		for (int j = 1; j <= s; ++j)
		{
			if (j >= w[i - 1])
				dp[i][j] =
				max(dp[i - 1][j - w[i - 1]] + v[i - 1],
					dp[i - 1][j]);
			else
				dp[i][j] = dp[i - 1][j];
		}
	}
	
	cout << dp[sz][s] << '\n';
	return 0;
}

• Subtask 1: 12 / 12
• Subtask 2: 17 / 17
• Subtask 3: 20 / 20
• Subtask 4: 0 / 24
• Subtask 5: 0 / 27